Problems

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Name   Total Acc. Ratio Fastest Total Acc. Ratio Difficulty
0-1 Sequences 12599 2006 16% 0.00 2602 1392 53% 5.2
10 Kinds of People 28096 5690 20% 0.01 4856 3455 71% 5.4
2048 11145 5079 46% 0.00 4962 4209 85% 2.9
2, 4, 6, Greaaat 981 149 15% 0.15 115 48 42% 8.9
3D Printed Statues 15277 7026 46% 0.00 6621 5912 89% 2.2
3D Printer 1058 173 16% 0.00 449 132 29% 8.9
3-Sided Dice 2952 240 8% 0.00 486 168 35% 8.8
4 thought 13221 4560 34% 0.00 4337 3663 84% 2.7
A1 Paper 7014 2146 31% 0.00 2135 1706 80% 3.5
Aa 175 123 70% 0.01 49 34 69% 5.7 - 8.0
Aaah! 38075 17850 47% 0.00 16116 15037 93% 1.6
Abandoned Animal 2677 595 22% 0.03 688 503 73% 5.4
ABC 21510 9722 45% 0.00 9269 8391 91% 1.9
Ab Initio 2258 363 16% 0.08 312 194 62% 7.5
Above Average 13977 5803 42% 0.00 5600 5022 90% 2.1
A+B Problem 10304 1000 10% 0.03 1444 475 33% 8.4
A Brief Gerrymander 569 109 19% 0.11 104 50 48% 9.1
Abstract Art 469 155 33% 0.00 131 95 73% 6.5
Abstract Painting 1209 479 40% 0.00 424 342 81% 4.3
Absurdistan Roads II 710 238 34% 0.00 241 158 66% 7.1
Absurdistan Roads III 1875 534 28% 0.02 495 378 76% 5.6
Access Denied 1 1 100% 0.01 1 1 100% 5.5
Access Points 549 185 34% 0.01 177 137 77% 5.9
Accounting 2580 739 29% 0.01 612 438 72% 4.0
A Classy Problem 13182 3463 26% 0.01 3015 2359 78% 4.0
ACM Contest Scoring 8849 5512 62% 0.00 4931 4658 94% 1.6
Add 'Em Up! 2871 668 23% 0.01 697 493 71% 5.2
Adding Words 15282 3763 25% 0.00 3527 2766 78% 3.7
Add Two Numbers 6498 4235 65% 0.00 3981 3822 96% 1.3
A Different List Game 7612 527 7% 0.00 1016 195 19% 9.3
A Different Problem 42968 15827 37% 0.00 14498 12548 87% 2.5
Adjoin the Networks 2821 710 25% 0.00 616 489 79% 5.8
Administrative Difficulties 1905 405 21% 0.02 388 265 68% 6.3
Ads 908 96 11% 0.00 178 70 39% 5.4
Advanced Causal Measurements 129 41 32% 0.10 42 32 76% 7.5
Adventure Begins 374 119 32% 0.06 116 88 76% 6.0
Adventures in Moving -- Part IV 1831 405 22% 0.00 354 287 81% 5.1
A Favourable Ending 2212 589 27% 0.00 550 423 77% 4.6
A Feast For Cats 3743 1377 37% 0.00 1022 878 86% 3.6
A Flea on a Chessboard 1023 214 21% 0.01 212 151 71% 5.3
A Horse Shoe-In 129 13 10% 0.27 21 9 43% 9.2
AI Jeopardy 604 80 13% 0.02 80 52 65% 6.7
Air Conditioned Minions 7603 2253 30% 0.00 2250 1741 77% 3.7
Airline Hub 2386 527 22% 0.01 475 283 60% 6.7
Airport Coffee 1395 281 20% 0.04 264 184 70% 6.9
Airport Construction 3837 476 12% 0.02 423 223 53% 7.9
Airport Logistics 72 20 28% 0.00 26 19 73% 7.0
Airports 696 216 31% 0.11 188 140 74% 5.7
Air Rally 85 0 0% -- 11 0 0% 8.8
Akcija 11959 5233 44% 0.00 4490 4006 89% 2.3
Aladin 884 104 12% 0.10 145 33 23% 8.8
Alchemy 175 34 19% 0.02 45 24 53% 9.0
Alchemy 101 824 249 30% 0.05 201 160 80% 3.9
Alea iacta est 45 16 36% 0.19 20 15 75% 6.6
Alehouse 1099 409 37% 0.02 405 290 72% 5.2
Alex and Barb 1319 466 35% 0.00 540 423 78% 3.3
Alice in the Digital World 6277 1611 26% 0.01 1453 1151 79% 4.0
Alien Codebreaking 322 31 10% 3.23 59 16 27% 8.5
Alien Microwave 262 101 39% 0.00 134 96 72% 6.7
Alien Numbers 3058 1626 53% 0.00 1590 1459 92% 1.9
A List Game 11490 3469 30% 0.00 3348 2838 85% 2.8
All about that base 3420 1363 40% 0.00 1314 1114 85% 3.0
All Different Directions 1767 828 47% 0.00 786 705 90% 2.4
Allergy Test 661 170 26% 0.00 216 108 50% 8.0
All Friends 1177 224 19% 0.00 212 113 53% 8.7
All in the Family 176 39 22% 0.00 56 37 66% 5.4
All is Well 150 39 26% 0.03 37 32 86% 5.2
All Just A Dream 2947 782 27% 0.05 578 444 77% 5.3
All Kill 124 102 82% 0.00 58 51 88% 3.5
Alloys 958 341 36% 0.00 357 296 83% 3.9
All Pairs Shortest Path 14249 2745 19% 0.00 1743 1257 72% 5.6
Almost Perfect 13872 3116 22% 0.00 3183 2528 79% 3.4
Almost Union-Find 10485 1827 17% 0.02 1651 1006 61% 6.3
Alphabet 2860 1459 51% 0.00 1395 1181 85% 3.1
Alphabet Animals 8540 1573 18% 0.00 1389 991 71% 6.2
Alphabet Spam 11498 7175 62% 0.00 6094 5858 96% 1.4
Alternating Current 714 696 97% 0.00 123 120 98% 1.4 - 8.3
Alternative Anagram 272 85 31% 0.00 79 56 71% 7.3
Alternative Bracket Notation 240 104 43% 0.00 112 92 82% 5.4
Alto Singing 96 42 44% 0.00 43 40 93% 4.3
Altruistic Amphibians 573 158 28% 0.22 133 99 74% 5.0
Amalgamated Artichokes 5298 2377 45% 0.01 2098 1852 88% 2.7
Amanda Lounges 2023 599 30% 0.03 512 416 81% 5.3
A Mazing! 4077 1056 26% 0.09 415 309 74% 5.6
Amazing Adventures 527 145 28% 0.02 166 117 70% 6.4
Amazing Race 704 176 25% 0.29 155 119 77% 5.5
Ambiguous Result 301 70 23% 0.02 102 65 64% 7.0
Amsterdam Distance 2412 1205 50% 0.00 1222 1049 86% 2.6
A Multiplication Game 1372 564 41% 0.00 608 473 78% 4.2
Anagram Counting 4873 1952 40% 0.00 1894 1588 84% 3.1
Andrew the Ant 530 165 31% 0.05 171 134 78% 4.7
A New Adventure 1556 236 15% 0.00 231 166 72% 5.8
A New Alphabet 14566 6583 45% 0.00 6166 5672 92% 1.9
An I for an Eye 1376 401 29% 0.00 465 344 74% 4.9
Animal Classification 1697 397 23% 0.03 338 226 67% 6.9
An Industrial Spy 2509 1325 53% 0.02 1064 932 88% 2.9
Annoyed Coworkers 1355 413 30% 0.02 261 234 90% 3.2
Another Brick in the Wall 4624 2327 50% 0.00 2269 2062 91% 2.1
Another Candies 10940 3052 28% 0.00 3079 2581 84% 2.7
Another Coin Weighing Puzzle 791 220 28% 0.00 148 120 81% 5.8